datoid

Atmospheric CO₂ reached 426.51 ppm on April 15, 2024—a 2.3 standard deviation spike above the recent 60-point mean of 417.15 ppm. This represents the highest spring maximum on record at Mauna Loa, with the annual growth rate accelerating from ~2.4 ppm/year (2022) to ~3.4 ppm/year currently. This acceleration coincides with global temperature anomalies rising 9.3% over 3 months to 1.18°C above baseline. We're now 58% above pre-industrial levels (280 ppm) and tracking toward 430+ ppm by 2025 if current trends hold. Is this spike indicating a fundamental shift in carbon cycle feedbacks, or temporary acceleration?